A、 If as many as 50% of the holes are contaminated, you should clean the display units behinds the holes.
B、 The holes on the bottom of the display unit should be cleaned once over 50% of them are clogged due to contamination.
C、 If contamination causes a blockage of more than 50 percent of the holes, then clean the holes on the rear of the display units.
答案：C
A、 If as many as 50% of the holes are contaminated, you should clean the display units behinds the holes.
B、 The holes on the bottom of the display unit should be cleaned once over 50% of them are clogged due to contamination.
C、 If contamination causes a blockage of more than 50 percent of the holes, then clean the holes on the rear of the display units.
答案：C
A. A pilot with certification authorized by Part 43 of the regulation can perform limited preventive maintenance.
B. According to Part 43 of the regulation, A pilot is certificated to perform limited preventative maintenance.
C. A certificated pilot is authorized by Part 43 of the regulation to perform limited preventive maintenance.
A. 该程序应清楚地说明操作步骤，并以正确的工作流程按需接近并分步移除或安装软件。
B. 该程序应按照逻辑工作流程顺序，按需清楚地描述逐步操作，以接近并随后移除或安装硬件。
C. 该程序清晰地介绍了获取、移出或安装硬件所需的操作步骤，并且是按照正确的工作流程。
A. 基本控制和操作信息描述的是飞机部件的控制及工作的方式，包括任何特殊程序和适用的限制。
B. 飞机的基本控制和操作信息是关于飞机、部件是如何操作的，包括所有的特殊程序和适用的限制。
C. 飞机操作控制、部件的运作信息，以及其特殊程序和极限都在基本控制和操作信息中说明。
A. Many electrical power components are in the EE compartment.
B. Many electrical power components are in the cargo compartment.
C. Many electrical power components are in the APU compartment.
A. This document compliments informaiton to the applicable airplane maintenance manual(s).
B. This document provides necessary informaiton to the applicable airplane maintenance manual(s).
C. This document provides supplemental informaiton to the applicable airplane maintenance manual(s).
A. The air conditioning system keeps the air in the pressurized fuselage compartments at the correct pressure, temperature and freshness.
B. The air conditioning system keeps the air in the pressurizing cabin of the fuselage at the correct pressure, temperature and freshness.
C. The air conditioning system keeps the air in the pressurized cabin of the fuselage at the correct pressurization, temperature and freshness.
A. Make sure that there is supplied airflow in the work area.
B. Make sure that there is sufficient airflow in the work area.
C. Make sure that there is efficient airflow in the work area.
A. Obey the procedure if there is no debris in the oil sample.
B. If the fuel is not polluted, go on with the procedure.
C. If there is no contamination in the fuel sample, continue the procedure.
A. 与本规范的符合性相关的重要意见应予以公布。
B. 对于和本规范相抵触的重大意见应予以公布。
C. 应发布符合本规范的重要议题。
A. 位于连接发电机和驱动组件的法兰上的端口，使滑油在恒定转速驱动器和可用发电机之间流动。
B. 位于连接发电机和驱动组件的连接处的端口，使滑油产生了在变速驱动器和发电机之间流动的可能性。
C. 端口位于连接发电机和驱动组件的法兰上，使滑油可以在恒速驱动器和发电机之间流动。
